Pump for oil-wells.



(Nn Model.)

me noms versus no., vnu-rauwe.. wnsmuaro, u'. e.

UNITED STATES PATENT OFFICE.

ARTHUR BLOYD GAHAGAN, OF GLADE MILLS, PENNSYLVANIA, ASSIGNOR OF TWO-THIRDS T JOHN A. HUGHES AND CHARLES W. DOUTT, OF GLADE MILLS, PENNSYLVANIA.

PUMP FOR OIL-WELLS.

SPECIFICATION formingpart of Letters Patent o. 715,253, dated December 9, 1902. f

Application led April 19, 1902.

To all whom. t r11/any concern:

Beit known that I, ARTHUR BLOYD GARA- GAN, a resident of Glade Mills, in the county of Butler and State of Pennsylvania, have invented a new and useful Improvement in Pumps for Oil-VVells; and I do hereby declare the following to be a full, clear, and exact description thereof.

Myinvention relates to oil-well pumps, and

to has special reference to what are known as downstroke pumps.

The object of my invention is to provide a cheap and simple form of pump which can easily and quickly be inserted and withdrawn I5 from the well without disturbing the tubing of such well, as Well as one which is not liable to get out of order and will be capable of being inserted and withdrawn from the well Without disturbing the tubing therein.

My invention consists, generally stated, in the novel arrangement,construction,and combination of parts, as hereinafter more specically set forth and described, and particularly pointed out in the claims. y

To enable others skilled in the art to which my invention appertains to construct and use my improved oil-well pump, I will describe the same more fully, referring to the accompanying drawings, in which- Figure 1 is a vertical section through my improved oil-well'pump, showing the same in position for working. taken at right angles to that shown in Fig. 1 and showing the plunger in its raised posi- 35 tion. Fig. 3 is a cross-section of the same on the line 3 3, Fig. 2, looking in the direction of the arrow. Fig. 4 is a like View of the same on the line 4 4, Fig. 2, looking in the direction of the arrow; and Fig. 5 is a like 4o View on the line 5 5, Fig. 2, looking in the direction of the arrow.

Like numerals of reference herein indicate like parts in each of the figures of the drawings.

As illustrated in the drawings, 1 represents the usual working barrel, within which is located the pumping mechanism 2, being secured in place within said barrel l by means of leather cups 3', secured within and around 5o the valve-bottom 3 and engaging with the in- Fig. 2 is a like view Serial 170.1031745. (No model.)

terior face 1l of said barrel 1 to form the packing 3". The valve-bottom 3 is provided with the open end 4 therein, having a spider-covering 5 over and below the same, and the open end 4 connects with the passageway 6, ex- 55;V tending up through said bottom 3, while the upper end of said bottom 3 is connected to the lower end of a section of tubing or a coupling 7 by screw-threads 7, and the upper end of said coupling 7 is connected by screw- 6or threads 8 with the lower end of a liner 8. At the upper end ofthe passage-way 6 is provided the seat 9 for the reception of the valve 10, which is of the well-known ball construction and has the cagell surrounding the same Within the coupling 7 and connected to the upperend of the bottom 3. The cage 11 is provided with openings 12 in the sides of the same and has the passage-way 13 at the top thereof, at the upper end of which is the seat 7o 14 for the valve 15, of like construction as the valve 10. The cage 11 is adapted to fit against a shoulder 16 'on a contracted portion 17 in said coupling 7, so as to provide for the passage-ways 16" through said contracted por- 75 tion 17 and the chamber 16 therein, which is provided with the closed top 17. The coupling 7 is provided with the openings 18 in the sides of the same, which are opposite to and connect with the interior of the barrel 1 and 8o chamber 16 of the portion 17.

Fitting within the liner S is the plunger 19, which is provided with the plunger-head 20, secured in its lower end,and such plunger 19 passes through a stufng-box 21, secured to the upper end of the liner 8, and is provided with a threaded extension 22 at its upper end, to which is secured the rod 23 for Working the plunger, while a stop 24 is secured to the upper end of the liner 8 below the stufinggo box 21 to limit the movement ofthe plunger 19.

In the operation 'the entire pump is dropped by the rod 23 to position, and the leather cups 3V', forming the packing 3 on the valve-bot- 95 tom 3, will firmly wedge itself in the barrel 1, thus insuring the passage of the oil only up through the passage-way 6 in the valve-bottom 3, when upon actuating the reciprocating plunger 19 by the rod 23 a ilow will beinroo rto secure by Letters Patent, is-

`tom portion and provided with a contracted duced through the passage-way 6 and raise the valve 10 from its seat 9 to permit the oil to iioW into the cage 1l and out through the openings 12 therein into the coupling 7, as Well as up through the passage-ways 16" in the portion 17 and up within the liner 8 above the top 17 to fill the liner as the plunger 19 and head 20 thereon are raised bythe rod 23. Upon the reversingr of the movement of the plunger `19 downward by the rod 23 the valve 10 will close against its seat 9, and the oil under theplunger 19 and head 2() will be forced downward, so as to pass back down through the passage-Ways 16, through the openingsv 12 into the cage 11, and up through the passage-wav 13 in the cage 11'to raise the valve 15 from its seat 14, thereby allowing the oil to pass into the chamber land out through the openings 18 into the barrel 1. When the plunger 19 is again raised, the interior of the coupling '7 and liner 8 will be again lled by the raising of the valve 10,l and upon lowering the said plunger thevalve 10 will be again closed and the valve 15 opened to force the oil out into the barrel l through the chamber 16 and openings 18, which, in addition to the' displacement caused by the lowering of the plunger, will result in a flow of oil upwardly and out through the top of the barrel, as in the usual way, upon each downward motion of the plunger 19. i

The construction of my improved pump is very simple and economical, and its operation is effective without liability to disorder or much wear, and various modilications and l changes in the construction and design of the various parts therein may be made without departing from the spirit of the invention or sacrificing any of its advantages.

What I claim asl my invention, and desire y1. In an oil-well pump, the combination with the working barrel, of a hollow bottom portion adapted to engage with the interior ot` said barrel, a liner connected to vsaid botportion therein so as to form passage-ways y rectly into the interior of the barrel, a reciprocating plunger within said liner and pass-l ing through a stufting-box at the upper endv thereof, a check-valve at the upper end 0f said bottom portion, a cage surrounding said check-valve having openings therein leading tothe interior of said liner, and a check-valve above said openings in said cage and within the chamber of the liner, said cage having a seat at the upper end thereof for the lastnamed check-valve and such seat or upper end acting to limit the upward movementof the first-named check-valve.

2. In an'oil-well pump, the combination with the working barrel, of a hollow bottom portion adapted to engage with the inte-rior of surrounding said check-valve having open-v ings therein leadingto the interior of said coupling, and a check-valve above said openings in said cage and within the chamber of the coupling, said cage having a seat at the upper end thereof for the last-named check- Valve and such seat or upper end acting to limitV the upward movement of the first-named check-valve.

3. In an oil-well pump, the combination with the working barrel, of a hollow bottom portion adapted to engage with the interior of said barrel, a liner connected to said bottom portion and provided with a contracted portion therein so as to form passage ways through the same, said portion having openings through the sides of the same communicating with a chamber therein and leading directly into the interior of the barrel, a reciprocating plunger Within said liner and passing through a stulng-box at the upper end thereof, a check-valve at the upper end of said bottom portion, a cage connected to said bottom portion around said check-valve and having openings therein leading to the interior of said liner, and a check-valve above the openings in said cage and within the chamber of the liner, said cage having a seat at the upper end thereof for' the last-named check-valve and such seat or upper end acting to limit the upward movement of the rst-named check-valve.

4. In an oil-Well pump, the combination portion adapted to engage with the interior of said barrel, a couplingr connected at its lower end to said bottom portion and provided with a contracted portion therein so as to form passage-Ways through the sides of the same, said portion having openings through the same communicating with a chamber therein and leading directly into the interior of said barrel, a liner connected to the upper end ot' IOO IIO

`with the working barrel, of a hollow bottom said coupling, a reciprocating plunger within or upper end acting to limit the upward movement of the first-named check-valve.

5. In an oil-well pump, the combination of the working barrel, of a hollow bottom portion adapted io engage with the interior of said barrel, a liner connected to said bottom portion and provided with a contracted portion therein so as to form passage ways through the same, said portion having openings through the sides of the same communieating with a chamber therein and leading directly into the interior of the barrel, a reciprocating plunger Within said liner and passing through a stuffing-box at the upper end thereof, an operating-rod connected to said plunger to actuate the same, a checkvalve at the upper end of said bottom portion, a cage surrounding said checkvalve having openings therein leading to the interior of said liner, and a check-valve above said openings in said cage and within the chamber of the liner, said cage having a seat at the upper end thereof for the last-named check-valve and such seat or upper end acting to limit the upward movement of the firstnarned check-valve.

6. In an oilwell pump, the combination with the working barrel, of a hollow bottom portion adapted to engage with the interior of said barrel, a coupling connected at its lower end to said bottom portion and provided with a contracted portion therein so as to form passage-ways through the sides of the same, said portion having openings through the same communicating with a chamber therein and leading directly into the interior of the barrel, a liner connected to the upper end of said coupling, a reciprocating plunger Within said liner and passing through a stufingbox at the upper end thereof, an operating-rod connected to said plunger to actuate the same, a cheek-valve at the upper end of said bottom portion, a cage surrounding said checkvalve having openings therein leading to the interior of said coupling, and a check-valve above said openings in said cage and within the chamber of the coupling, said cage having a seat at the upper end thereof for the lastnamed checkwalve and such seat or upper end acting to limit the upward movement of the first-named check-valve. Y

7. In an oil-well pump, the combination with the Working barrel, of a hollow bottom portion adapted to engage with the interior of said barrel, a liner connected to said bottom port-ion and provided with a coutractedportion therein so as to form passage-ways through the same, said portion having openingsv through the sides of the same communicating with 'a chamber therein and leading directly into the interior of the barrel, a reciprocating plunger within said liner and passing through a stuiiing-box at the upper end thereof, an operating-rod connected to said plunger to actuate the same, a check-valve at the upper end of said bottom portion, a cage connected to said bottom portion around said checkvalve and having openings therein leading to the interior of said liner, and a check-valve above the openings in said cage and within the chamber of the liner, said cage having a seat at the upperend thereof for the lastnamed check-valve and such seat or upper end acting to limit the upward movement of the rst-named check-valve.

8. In an oil-.well pump, the combination with the working barrel, of a hollow bottom portion adapted to engage with theinterior of said barrel, a coupling connected at its lower end to said bottom portion and provided .with a contracted portion therein so as to form passage-ways through the sides of the same, said portion having openings through the same com municating with the chamber therein and leading directly into the interior of said barrel, a liner connected to the upper end of said coupling, a reciprocating plunger within said liner and passing through a stuffing-box at the upper end thereof, an operating-rod connected to said plunger to actuate the same, a check-valve at the upper end of said bottom portion, a cage connected to said bottom portion around said check-valve and havingopenings therein leading to the interior of said coupling, and a check-valve above the openings in said cage and within the chamber of the coupling, said cage having a seat at the upper end thereof for the last-named check-valve and such seat or upper end acting to limit the upward movement of the first-named checkvalve.

In testimony whereof Lthe said ARTHUR B. GAH-AGAN, have hereunto set my hand.

ARTHUR BLOYD GAHAGAN.

Witnesses:

J. N. COOKE, L. T. MARKS.

ICO 

